Note 5 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Risk-free interest rates	4.27%	—	4.94%
Expected life (in years)	1	—	3
Dividend yield	0.73%
Expected volatility (weighted average)	28.0%	—	34.0%

Risk-free interest rates	3.86%	—	4.68%
Expected life (in years)	2	—	5.75
Dividend yield	0.59%
Expected volatility (weighted average)	36%	—	42.20%